Notifyr.com is a fun free tool that lets you subscribe to any Flickr user updates by email. Whenever the user adds or deletes photos, you’ll get an email notification like this one:

3. Track Flickr Groups:

Group Trackr lists some pretty cool statistics on any Flick group. It requires no registration; each group tracking start when someone requests it from the tool – after that the stats will be public. For any group URL you submit you will see:

Recent photo tags;

Group activity;

Similar groups;

Group growth graph:

4. Track Your Own Account Views:

Flickr does offer an enhanced stats reporting but only under paid account. If you prefer to keep using Flickr for free, try LinuxInside – the stats are somewhat basic but at least you will see the trend. First you will have to allow its access to your Flickr account: